Value Collection 592489BR Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 592489BR is a hex socket cap screw designed for high-strength fastening in mechanical, structural, and industrial applications. This screw features a 7/8-9 UNC thread size with a 6-inch length under the head and is partially threaded, making it well-suited for applications where a grip zone is needed beneath the head. Driven by a 3/4-inch hex key, the fastener is manufactured from 18-8 austenitic stainless steel in a bright, uncoated finish. Machinists, maintenance technicians, and industrial mechanics rely on this type of fastener where corrosion resistance and reliable clamping force are required.

This hex socket cap screw is used across a wide range of industrial and commercial settings, including machinery assembly, equipment mounting, and structural connections where a recessed drive is preferred for a flush or low-profile installation. The partial threading provides a shank section for precise alignment and shear load transfer. Typical install scenarios include flanged joints, machine bases, and fabricated steel assemblies where access is limited to a single side.

Key Features

• 7/8-9 UNC thread for high load capacity in coarse-thread applications
• 6-inch length under head with partial threading for shank grip and alignment
• 3/4-inch hex socket drive for use with standard hex keys or bit sockets
• 18-8 austenitic stainless steel construction for corrosion resistance
• Bright, uncoated finish — no coating buildup affecting thread tolerance
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as a standard-dimension hex socket cap screw per ASME/ANSI B18.3, compatible with any tapped hole or nut in 7/8-9 UNC specification.

Installation Notes

Installation is performed with a 3/4-inch hex key or socket driver; ensure the driving tool is fully seated before applying torque to avoid rounding the socket. Power down or de-energize any equipment before fastener service on mechanical assemblies. Follow applicable torque specifications from the equipment manufacturer or relevant ASME standards for the joint material and fastener grade. Stainless steel fasteners are susceptible to galling — apply appropriate anti-seize compound to threads if required by the application.